Fatigue testing machine for High loads with electromagnetic resonance drive

Resonant fatigue testing machines can stress specimens or structures with a dynamic load superimposed to a static load.

The dynamic load is generated by an oscillating system (resonator) which runs in its natural frequency. The oscillating system consists of masses and springs whereas the structure or the specimen which has to be tested is also part of.

The Resonant Fatigue Testing Machines get used to full resonance, i.e. the operating point is situated on the top of the resonance curve. The resonator is excited by an electromagnetic system.

Taking advantage of the resonant effect, the power consumption is very low (typical 20 to 500 Watts), with the operating frequency in the range of 50 to 300 cpm.

In combination with our Control and evaluation system and software, you can have an intelligent and easy to operate package for your fatigue testing requirements.

Technical data:

Applications

Resonant Fatigue Tester Machines are very often used for fatigue tests (S/N - curves) or in the fracture mechanics for precracking and crack propagation tests. This principle has many advantages compared to servo-hydraulic machines.

All types of tests with a high number of load cycles are beneficial applications for resonant testing machines because of the high testing frequency, and as a result very short testing time as well as very low power consumption.

The additional advantage in comparison to servo-hydraulic systems with its actuators, valves and pumps is that maintenance is not required due to the wear resisting construction.

• Fatigue tests (S/N-curves) in R&D and quality control
• Fatigue crack growth investigations (fracture mechanics)
• K-Threshold determinations (fracture mechanics)
• precracking of fracture mechanic specimens
• blocked random tests

Corrosion Chamber

(Cooling & Heating)

High Temperature Furnace up to 900° C